Do you know if she's using her computer for anything financial related or just plain sending emails?

Depending on your own schedule, I would set her passwords for anything serious for her, like banking, and when she needs to login to those websites, you can remote in via teamviewer or what not and login for her, or tell her the password over the phone. You'd be essentially a human password manager, but this would allow you to help her with anything serious and important without consequences and also you would know her information in an emergency without jumping through hoops.